Spark-arrester.



, PATENTED JUNE 9, 1908. R. A. BENDER '& W. F. SOHOMBURG.

SPARK ARRBSTER. PPPPPPPPPPPPPPPPP 017.18, 1907.

UNITED sTATEs 'ainur elemen.

RUDOLF A. BENDER AND WILLIAM F. SCHOMBURG, OF SAN ANTONIO, TIXAS.

SPARK-ARRESTER.

Application filed November 18, 1907.

To all 'whom it may concern:

Be it known that we, RUDOLF A. BENDER and WiLLIAM F. SOHOMBURG, citizens of the United States, residing at San Antonio, in the county of BeXar and State of Texas, have invented certain new and usefulV Improvements in Spark-Arresters, of which the following is a specification.

This invention pertains to certain new and useful improvements in spark arresters, and has for its object to provide a device of this type which will be efficient and practical in its use and of simple cheap construction.

Further objects of the invention will appear in the course of the following specification.

Referring to the .accompanying drawings forming a part of this specification and in Which like characters 'of reference denote similar parts throughout the several views, Figure 1 is a vertical sectional view taken through a chimney or smoke stack and showing the containing casing in section and the remaining parts in side elevation, and Fig. 2 is a like view showing all of the parts in section.

In the drawings 1 designates the chimney or smoke stack which is arbitrarily depicted.

2, designates a cylinder which forms the main part of the containing casing, the upper end of which is inclined as at 3. The lower end of the casing is also inclined as indicated at 4, and has an outwardly extending flange 5.

6 designates a section of tubing which fits into the inside of the stack and is formed with a right angular outwardly projecting flange 7 which seats on the top edge of the stack. The base flange 5 of cylinder 2, seats on flange 7 and is riveted thereto.

S designates a second cylinder which is formed adjacent its lower end with a peripheral flange 9 seating on the top edge of cylinder 2 and is thereby held in position. The lower end of cylinder 8 projects somewhat on the interior of cylinder 2 and forms a guide for a ring 10, which has a sliding movement therein.

The invention contemplates imparting a spiral motion to the egressing smoke, to attain whichl we employ coils of tubing 11, which are spirally wound and having the coils, united to form a practically integral structure. Each of the upper and lower coils are cut through at right angles to the axis of Specification of Letters Patent.

Patented June 9, 1908.

Serial No. 402,674.

the coils as a whole so as to leave the top and bottom thereof completely open. The bottom of the coil of tubing is flanged slightly outwardly as at 12, so as to completely cover the upper end of tube 6, and there'by assure allixed to the ring 10 and the coil 11 rcspectively. lever 16 is pivoted, one end of which is connected to a wire rope 17 which extends upwardly through aperture 14 in deflector 13 and also through the space 18 formed bctween the coils at the center thereof up and over a pulley 19 carried by the cylinder S and thence downwardly and secured to the top of deflector 13. To the other end of lever 16 is connected a wire rope 20 which has its upper end secured to the bottom. of coil 11. It will thus be seen that by moving the lever 1G the coil 11 will be raised or lowered as desired to enable the stack to be cleaned.

In conjunction with the above we employ a brush 21 which is movable vertically along the length of the stack by means of a chain 22 which has its ends secured to said brush and which passes over sprockets 23 24, located at the upper and lower ends of the stack respectively. As shown in dotted lines in the drawings at 25 the sprockot 24 eX- terior the'stack is equipped with a crank handle by means of which the sprocket may be rotated to move the brush along the length of the stack.

In operation the smoke will be encountered by the lower open end of c'oil 11, and

-which in passing through the coil will be given spiral movement. VVhen the smoke egresses through the top end of coil 11 it will be deflected outwardly by the deflector 13 thereby projecting sparks and cinders against the cylinder 2 due to the centrifugal force which the smoke has aequired during its passage through coil 11. The cinders and other particles will gravitate downwardly and will be caught between the flange 12 at the base of the coil and the inclined portion 4 of cylinder 2. To release the collected particles,

At the lower portion of the stack a proper movement of lever 16 will raise coil 11, and thus permit the collected matter to gravitate downwardly through the stack.

What we claim is 1 1. In combination with a stack, a tube received in the upper portion thereof and formed with a Aliange seating on the` top, a cylinder having inclined ends, a flange secured to one of said ends and secured to said first named flange, a second cylinder having a peripheral projection received in the top end of the first cylinder and having its projection seating on the end thereof, a guide ring in said second cylinder, a coil of tubing open at the top and bottom thereof, a deflector having a cone-shaped under face overlying the top end of said coil of tubing, links connecting said coil of tubing, said deflector and said guide ring, and means connected to said. deflector to raise and lower the parts.

2. In combination with a stack, a cylinder tliereon, a second cylinder of less diameter than the first secured to said first cylinder, a

' guide ring in the second cylinder, a coil of tubing having its top and bottom open, the bottom of said coil engaging the base of the first cylinder and forming a closure therefor, means for connecting said coil to said guide ring, and means for raising and lowering said coil said ring acting as a guide for said coil in its up and down movement.

3. In combination with a stack a cylinder thereon, a second cylinder of less diameter than the first secured to the top of the latter, a coil of tubing open at its top and bottom, a deflector overlying the top of said coil and spaced therefrom, a guide ring slidingly mounted in said second cylinder, links connected at their tops to said ring and at their bottoms to the top 'of saidcoil of tubing, said links eXtending through said deflector and being connected thereto, a pulley in the second cylinder, a lever pivoted at the base of the stack, and a pair of cables one of which is connected to one end of said lever and to the base of said coil of tubing and the other of which is connected to the other end of said lever passes upward through the central space between the coils then through said deflector over said pulley and finally secured to said deflector.

In testimony whereof we have affixed our signatures in presence of two witnesses.

RUDOLF A. BENDER. WILLIAM F. SCHOMBURG. Witnesses:

EMIL BEHRENS, W. A. J. RoAoH. 

